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/* Copyright (C) 2007-2013 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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* \author Anoop Saldanha <anoopsaldanha@gmail.com>
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*/
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#ifndef __APP_LAYER_PROTOS_H__
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#define __APP_LAYER_PROTOS_H__
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enum AppProtoEnum {
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ALPROTO_UNKNOWN = 0,
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ALPROTO_HTTP,
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ALPROTO_FTP,
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ALPROTO_SMTP,
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ALPROTO_TLS, /* SSLv2, SSLv3 & TLSv1 */
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ALPROTO_SSH,
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ALPROTO_IMAP,
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ALPROTO_MSN,
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ALPROTO_JABBER,
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ALPROTO_SMB,
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ALPROTO_SMB2,
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ALPROTO_DCERPC,
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ALPROTO_IRC,
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ALPROTO_DNS,
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ALPROTO_MODBUS,
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ALPROTO_ENIP,
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ALPROTO_DNP3,
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ALPROTO_NFS,
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ALPROTO_NTP,
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ALPROTO_FTPDATA,
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ALPROTO_TFTP,
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ALPROTO_TEMPLATE,
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/* used by the probing parser when alproto detection fails
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* permanently for that particular stream */
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ALPROTO_FAILED,
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#ifdef UNITTESTS
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ALPROTO_TEST,
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#endif /* UNITESTS */
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/* keep last */
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ALPROTO_MAX,
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};
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// NOTE: if ALPROTO's get >= 256, update SignatureNonPrefilterStore
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/* not using the enum as that is a unsigned int, so 4 bytes */
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typedef uint16_t AppProto;
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App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
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/**
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* \brief Maps the ALPROTO_*, to its string equivalent.
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*
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* \param alproto App layer protocol id.
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*
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* \retval String equivalent for the alproto.
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*/
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const char *AppProtoToString(AppProto alproto);
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/**
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* \brief Maps a string to its ALPROTO_* equivalent.
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*
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* \param String equivalent for the alproto.
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*
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* \retval alproto App layer protocol id, or ALPROTO_UNKNOWN.
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*/
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AppProto StringToAppProto(const char *proto_name);
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#endif /* __APP_LAYER_PROTOS_H__ */
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